Langkaan is a barangay located on the south-western part of Dasmariñas in Cavite, Philippines. The name "Langkaan" came from the word "langka" meaning jackfruit; which is believed to be planted in many parts of this barangay during the 1900, the year of its foundation. Barangay Langkaan was a part of a vast hacienda during the Spanish period that's why there are numerous water systems for ricefields that can be found here. The San Agustin Dam was constructed in 1855. On the last part of the 19th century, the Spaniards erected an indigo plantation here. The stone-made grinder of indigo still exists until now and it is the mark of the Spanish influence in the place. The Spaniards are the first ones who planted sugar canes and became the primary source of income during the 18th century. During those times, tarapiche and carabaos are used to make panucha and paldo. Don Placido Campos and Andres Medina are the ones who owned these tarapiche. When the Americans arrived, this place attracted residents from the Poblacion. The families Quillao, Bautista, Sarabusab, Reyes, Remulla, Sango, Laudato, Empeño, Satsatin, Medina, de Lima and others transferred here during those times. During the Second World War, the Japanese had a big plantation of cotton trees in Langkaan. Dasmarineños were forced to work here. A Japanese concentration camp was also established in this area. Now, this is considered to be a backbone of the economic progress of Dasmariñas. The presence of numerous factories in different industrial estates in this area, such as the First Cavite Industrial Estate, serves as the working place for the workers living in Dasmariñas and other towns of Cavite as well.